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#include <AggregateFunctions/AggregateFunctionFactory.h>
#include <AggregateFunctions/HelpersMinMaxAny.h>
namespace DB
{
struct Settings;
namespace
{
AggregateFunctionPtr createAggregateFunctionAny(const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings * settings)
{
return AggregateFunctionPtr(createAggregateFunctionSingleValue<AggregateFunctionsSingleValue, AggregateFunctionAnyData>(name, argument_types, parameters, settings));
}
template <bool RespectNulls = false>
AggregateFunctionPtr createAggregateFunctionNullableAny(
const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings * settings)
{
return AggregateFunctionPtr(
createAggregateFunctionSingleNullableValue<AggregateFunctionsSingleValue, AggregateFunctionAnyData, RespectNulls>(
name, argument_types, parameters, settings));
}
AggregateFunctionPtr createAggregateFunctionAnyLast(const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings * settings)
{
return AggregateFunctionPtr(createAggregateFunctionSingleValue<AggregateFunctionsSingleValue, AggregateFunctionAnyLastData>(name, argument_types, parameters, settings));
}
template <bool RespectNulls = false>
AggregateFunctionPtr createAggregateFunctionNullableAnyLast(const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings * settings)
{
return AggregateFunctionPtr(createAggregateFunctionSingleNullableValue<
AggregateFunctionsSingleValue,
AggregateFunctionAnyLastData,
RespectNulls>(name, argument_types, parameters, settings));
}
AggregateFunctionPtr createAggregateFunctionAnyHeavy(const std::string & name, const DataTypes & argument_types, const Array & parameters, const Settings * settings)
{
return AggregateFunctionPtr(createAggregateFunctionSingleValue<AggregateFunctionsSingleValue, AggregateFunctionAnyHeavyData>(name, argument_types, parameters, settings));
}
}
void registerAggregateFunctionsAny(AggregateFunctionFactory & factory)
{
AggregateFunctionProperties properties = { .returns_default_when_only_null = false, .is_order_dependent = true };
factory.registerFunction("any", { createAggregateFunctionAny, properties });
factory.registerAlias("any_value", "any", AggregateFunctionFactory::CaseInsensitive);
factory.registerFunction("anyLast", { createAggregateFunctionAnyLast, properties });
factory.registerFunction("anyHeavy", { createAggregateFunctionAnyHeavy, properties });
// Synonyms for use as window functions.
factory.registerFunction("first_value",
{ createAggregateFunctionAny, properties },
AggregateFunctionFactory::CaseInsensitive);
factory.registerFunction("first_value_respect_nulls",
{ createAggregateFunctionNullableAny<true>, properties },
AggregateFunctionFactory::CaseInsensitive);
factory.registerFunction("last_value",
{ createAggregateFunctionAnyLast, properties },
AggregateFunctionFactory::CaseInsensitive);
factory.registerFunction("last_value_respect_nulls",
{ createAggregateFunctionNullableAnyLast<true>, properties },
AggregateFunctionFactory::CaseInsensitive);
}
}
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